• 제목/요약/키워드: Jeung Is.

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로그 히스토리 분석을 사용한 웹 포렌식 알고리즘 연구 (A Study of Web Forensics Algorithm that used Log History Analysis)

  • 정정기;박대우
    • 한국컴퓨터정보학회논문지
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    • 제12권1호
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    • pp.117-126
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    • 2007
  • 수많은 로그 히스토리의 자료에서 컴퓨터 사이버범죄에 대한 증거자료로 채택되기 위한 기술적인 웹 포렌식 자료의 추출에 사용되는 웹 포렌식 알고리즘은 필수적인 요소이다. 본 논문에서는 웹 포렌식 알고리즘을 제안하고 설계하여, 실제 기업의 웹 서버 시스템에 제안한 알고리즘을 구현해 본다. 그리고 웹 로그 히스토리 정보에 대한 무결성이나 정보출처에 대한 인증을 적용한 웹 발신 로깅 시스템 구성실험을 한다. 회사의 이메일, 웹메일, HTTP(웹게시판, 블로그 등), FTP, Telnet 및 메신저(MSN, NateOn, Yahoo, DaumTouch, BuddyBuddy, MsLee, AOL, SoftMe)의 서버에서 웹 로그 히스토리 분석을 위해 사용한 웹 포렌식 알고리즘과 플로우를 설계하고 코딩을 통한 구현을 한다. 구현 결과 웹 포렌식을 통한 컴퓨터 사이버범죄에 대한 학문적 기술적 발전에 기여하고자 하는데 본 논문의 목적이 있다.

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"함산사촌(咸山沙村) 동의수세보원(東醫壽世保元) 갑오구본(甲午舊本)"과 "상교현토동의수세보원(詳校懸吐東醫壽世保元)"의 비교 연구 (A Comparative Study of "HamsanSachon DongyiSuseBowon GaboGubon" and "SangGyoHyeonTo DongyiSuseBowon")

  • 이태규;김상혁;이준희;이수경;김달래;고병희
    • 사상체질의학회지
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    • 제20권3호
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    • pp.21-39
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    • 2008
  • 1. Objectives The purpose of this study was to find out associations between "HamsanSachon DongyiSuseBowon GaboGubon" and "SangGyoHyeonTo DongyiSuseBowon" 2. Methods A comparative study of authors, colophons, tables of contents and texts of "HamsanSachon DongyiSuseBowon GaboGubon" and "SangGyoHyeonTo DongyiSuseBowon" was made. 3. Results and conclusions 1) There was a close connection between "HamsanSachon DongyiSuseBowon GaboGubon" and "SangGyoHyeonTo DongyiSuseBowon", compared their authors, colophons, tables of contents, texts, and so on. 2) It is supposed that "SaSangInByeonJeungRon" of "HamsanSachon DongyiSuseBowon GaboGubon" was not added any touches and "SaSangInByeonJeungRon" of "DongyiSuseBowon" (GyeongJaBon) was not revised. 3) "DongyiSuseBowon GaboGubon BokWonBon" and text of "SaSangUiHak" shold be amended partially.

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뇌졸중 후 중추성 통증으로 인한 좌반신비증 치험 1례 (A Case Report of Central Post-Stroke Pain Patient Treated by Moxibustion Therapy)

  • 이미림;이유리;민경동;조기호;문상관;정우상
    • 대한중풍순환신경학회지
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    • 제16권1호
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    • pp.35-40
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    • 2015
  • ■ Objectives The purpose of this clinical study is to evaluate the effect of moxibustion on a patient with left side paresthesia induced by central post-stroke pain. ■ Methods A patient with left side paresthesia diagnosed with central post-stroke pain was treated with moxibustion, herbal medication, acupuncture, electro-acupuncture(EA). Then we evaluated the improvement by Mcgill pain score and Questionnaire of BiJeung. ■ Results Decrease of Mcgill pain score, Questionnaire of BiJeung were observed after the moxibustion treatment. ■ Conclusion This study proved the effect of moxibustion treatment on left side paresthesia due to central post-stroke pain.

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계면활성제에 의한 피부 생리적 활성 변화에 대한 Rose, Lavender essential oil의 유효성 연구 (Efficiency Study of Rose and Lavender Essential oil in the Physiologic Active Changes of Skin Treated with Surfactant)

  • 남정해;최정숙
    • 한국패션뷰티학회지
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    • 제3권3호
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    • pp.48-55
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    • 2005
  • The summary of a study of efficacy of Rose essential oil and Lavender essential oil against physiologic active change s of skin caused to surfactant is as follows. 1. In feed intake efficiency, there is more significant difference than control group, and then in water intake, there are significant differences between each group. It is presented that the water intake efficiency ratio of the group treated by Rose essential oil and Lavender essential oil is higher than all of groups to be participated in experiment. And then, the reason that the group treated Lavender essential oil is lower than any other group is needed water intake to be caused by stress. 2. As the result of serum analysis, in atherosclerotic index(A.I), the cholesterol of control group is higher than that of the group treated. As HDL cholesterol is activated, the dan1aged group is higher than control group, in LDL cholesterol the control group is higher. It is seen that the damaged group of the quantity of HDL cholesterol is lower frequently in A.I. This fact is presented that HDL cholesterol that cholesterol is exhausted is changed, because of the dan1aged group that replacement is activated. 3. As the observed result of alteration of sebaceous glands, it is appeared that the demage of sebaceous glands is destroyed in the damaged group. It is observed that epidermis of the group applied by Rose essential oil after treated surfactant is dry, secretion of phenomenon of water and sebum is appeared more. It is observed that the epidermis recovery of the group applied by Lavender essential oil after treated surfactant is insufficient. And then it is seen that stratum corneum is recovered and the quantity of sebum secretion is decreased. 4. As the observed result of alteration of Mast cell group treated by Rose essential oil and Lavender essential oil for 3 weeks Luna's stain(${\times}100$), it is observed that the damaged group treated by Lavender essential oil is numerous in alteration of mast cell's number and Mast cell's size is larger than the dan1aged group. It is presented that the Mast cell's number and Mast cell's size is larger than the damaged group, the Mast cell's size and quantity of the group treated by Rose essential oil and Lavender essential oil is decreased more.

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쉘터시스템 내부 장비의 복합 소음 분석 (Multiple Noise Analysis of the Inside Equipments in Shelter System)

  • 김상현;이병호;이석규;이증;강동석
    • 한국소음진동공학회논문집
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    • 제25권4호
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    • pp.255-265
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    • 2015
  • Shelter system is applying to weapon systems as usage of performing specific mission with arranging several electronic equipments and operators. Recently the electronic equipments is changing from development products to COTS(commecial off-the-shelf) for demonstrating high performance at low cost. As internal operators of shelter system conduct several missions for specific or long time in this present situation, one of the most important element considering the best combat power is internal noise level. Therefore, I desire to analyze the features and foresee multiple noise level with test for conforming whether requirements of design is met or not in this research paper.

2상 고주파 인버터에 의한 초음파 모터 제어 (Control of Ultrasonic Motor Using Two-Phase High Frequency Inverter)

  • 허정윤;조금배;백형래;오금곤;정헌상;유권종
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 1994년도 하계학술대회 논문집 A
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    • pp.462-464
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    • 1994
  • In this paper, noble electrical equivalent circuit ultrasonic motor is applied by model of parallel one from mechanical equation of piezoelectric device and characteristics estimation is done by equivalent converter. Uitrasonic motor is driven by oscillation circuit of two-phase high frequency inverter. Operating frequency of inverter is described by tracking control method of resonance frequency, according to change of load, temperature etc.

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User Adoption Model under Service Competitive Market Structure for Next-Generation Media Services

  • Jeon, Hyo-Ri;Shin, Yong-Hee;Choi, Mun-Kee;Rho, Jae-Jeung;Kim, Myung-Seuk
    • ETRI Journal
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    • 제33권1호
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    • pp.110-120
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    • 2011
  • As information technology rapidly develops and the period required to enter new technology shortens, there emerges a wide variety of alternatives for consumers. When there are many alternatives in the market, users choose after making comparisons. This process of making comparisons is our research key. We established a research model to find a mixed effect that comes from new attitudes to technology adoption and alternative's continuous usage intention. The effect is revealed through a relative attractiveness (RA) factor to explain a user's process of comparison. We empirically test our research model in the new media services, such as mobile TV, web TV, and mobile IPTV. According to our research results, a continuous usage intention of an existing technology is an important factor to explain the adoption of a new technology. So, the contribution of our research is in finding a role for the RA factor in research in new technology adoption.

공동 내부로의 평행분사방법을 이용한 초음속 연소의 실험적 연구 (Experimental Study on Supersonic Combustion with Parallel Fuel Injection Method in the Cavity)

  • 정은주;정인석
    • 한국연소학회지
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    • 제12권2호
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    • pp.20-25
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    • 2007
  • The supersonic combustion experiments are carried out using T3 free-piston shock tunnel. Hydrogen Fuel is injected in the cavity parallel with air(or nitrogen) flow. The equivalence ratios in this study are 0.132 and 0.447. Experimental measurements use OH-PLIF near the cavity and pressures in the combustor. For parallel fuel injection case, direct fuel add into cavity leads to increase of cavity pressure. And Flame exists just near the bottom wall for low equivalent ratio. There is no flame in the cavity because of no mixing in it. Compared to the inclined fuel injection, ignition delay length is longer for low equivalence ratio in both case. OH distribution is not a single line but a repeatable fluctuation flame structure by turbulence. Pressure distributions have nothing to do with the fuel injection position.

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공동 내부로의 평행분사방법을 이용한 초음속 연소의 실험적 연구 (Experimental Study on Supersonic Combustion with Parallel Fuel Injection Method in the Cavity)

  • 정은주;정인석
    • 한국연소학회:학술대회논문집
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    • 한국연소학회 2007년도 제34회 KOSCO SYMPOSIUM 논문집
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    • pp.31-36
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    • 2007
  • The supersonic combustion experiments are carried out using T3 free-piston shock tunnel. Hydrogen Fuel is injected in the cavity parallel with air(or nitrogen fuel) flow. The equivalence ratios in this study are 0.132 and 0.447. Experimental measurements use OH-PLIF near the cavity and pressures in the combustor. For parallel fuel injection case, direct fuel add into cavity leads to increase of cavity pressure. And Flame exists just near the bottom wall for low equivalent ratio. There is no flame in the cavity because of no mixing in it. Compared to the inclined fuel injection, ignition delay length is longer for low equivalence ratio in both case. OH distribution is not a single line but a repeatable fluctuation flame structure by turbulence. Pressure distributions have nothing to do with the fuel injection position.

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파열 압력에 따른 튜브 내 고압 수소 누출에 의한 자발점화 현상 (Spontaneous Ignition of High Pressure Hydrogen Gas released into Tube due to the Burst Pressure Variation)

  • 이형진;김성돈;김세환;정인석
    • 한국연소학회:학술대회논문집
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    • 한국연소학회 2012년도 제45회 KOSCO SYMPOSIUM 초록집
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    • pp.93-96
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    • 2012
  • The spontaneous ignition mechanism of high pressure hydrogen gas released into tube is well-deduced from previous studies. However, those results have a limit because the studies have been conducted at low burst pressure of about 10 MPa. In this study, the process or ignition feature are investigated with higher burst pressure of up to 30 MPa through numerical analysis. The results show that the trend of ignition became to be different with a burst pressure. While two reaction regions is important to initiate the ignition when burst pressure is about 10 MPa, the reaction of the core region does not play a role in ignition inside the tube when a burst pressure is above 20 MPa.

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